赞题库-背景图
单项选择题

Exercising is an important way to protect bone health．
A.Right
B.Wrong
C.Not mentioned

A.A.Right
B.Wrong
C.Not
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热门试题

单项选择题竹亚科的主干叶称为（）

A．普通叶
B．秆箨
C．叶鞘
D．变态叶
E．小型叶

单项选择题According to the WH0，there are now 10 million AIDS patients in the worlD.A.RightB.WrongC.Not mentioned

A.A.Right
B.Wrong
C.Not